Exchange 2013 CU7 Installation crash on Mailbox role: Transport Service!!

Error:

The following error was generated when "$error.Clear();

            # Apply XML Transforms to FIPS configuration file if schema changed

            Write-ExchangeSetupLog -Info "Applying XML Transforms to FIPS configuration";

            $FipsBinPath = [System.IO.Path]::Combine($RoleInstallPath, "FIP-FS\bin");

            [Reflection.Assembly]::LoadFile([System.IO.Path]::Combine($FipsBinPath, "FSCConfigurationServerInterfaces.dll"));

            [Reflection.Assembly]::LoadFile([System.IO.Path]::Combine($FipsBinPath, "FSCConfigSupport.dll"));

            $configServer = New-Object Microsoft.FSC.Configuration.ConfigManagerClass;

            if(! $configServer)

            {

              Write-ExchangeSetupLog -Error "Configuration Server object could not be created.";

            }

            else

            {

              try

              {

                $configServer.Upgrade();

                Write-ExchangeSetupLog -Info "Configuration.xml was upgraded successfully";

              }

              catch

              {

                Write-ExchangeSetupLog -Error "Upgrade of Configuration.xml was unsuccessfull, $_";

              }

              # Stop the process if it is still running

              # We silently continue because if process has already exited, Stop-Process will throw error

              # Error is non-terminating and so can be suppressed

              Stop-Process -processname FSCConfigurationServer -Force -ErrorAction SilentlyContinue;

            }

          " was run: "System.Exception: Upgrade of Configuration.xml was unsuccessfull, Exception calling "Upgrade" with "0" argument(s): "Root element is missing."

   at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target, Boolean reThrow, String helpUrl)

   at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target)

   at Microsoft.Exchange.Management.Deployment.WriteExchangeSetupLog.InternalProcessRecord()

   at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__b()

   at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)".